Ocean Acidification

Multiple Choice

Carbon dioxide and seawater combine to form

• calcium carbonate

• carbon monoxide

• carbonic acid

Multiple Choice

When carbon dioxide ions react with water, what molecules do they release?

• Hydrogen Ions

• Carbonate Ions

Multiple Choice

How is the pH of ocean water decreasing?

• Marine calcifiers are dying, making more acid

• The ocean is getting too hot, which makes it acidic

• The ocean is mixing with CO₂ in the air to produce acid

Multiple Choice

What do some marine creatures do with the carbonate ion?

• 
  use it as a food source

• use it to build shells and exoskeletons

• 
  use it as a defense mechanism

Multiple Choice

Marine organisms make their shells from calcium and

• chloride

• carbonate

• seawater

Multiple Choice

This image demonstrates that

• There is a direct correlation with the atmospheric CO₂ and the CO₂ in seawater

• That pH of the ocean increases as the atmospheric CO₂ increases

• That there is no correlation between pH of the ocean and atmospheric CO₂

Multiple Choice

Very slight increases in the acidity of seawater __________  marine organisms that make shells.

• doesn't bother

• has no effect on

• is unhealthy and stresses

Multiple Choice

Which atmospheric gas is responsible for increasing the acidity of the ocean?

• Nitrogen

• Carbon Dioxide

• Oxygen

Multiple Choice

Ocean acidification is related to...

• climate change

• human impact

• fossil fuels

• all of the above